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Http_referer

Macros

#define HTTP_REFERER_INIT()
 Initializer for structure http_referer_t.
 
#define HTTPTAG_REFERER(x)
 Tag list item for pointer to a Referer header object.
 
#define HTTPTAG_REFERER_STR(s)
 Tag list item for string with Referer header value.
 

Enumerations

enum  { http_referer_hash }
 

Functions

http_referer_thttp_referer_init (http_referer_t x[1])
 Initialize a structure http_referer_t.
 
int http_is_referer (http_header_t const *header)
 Test if header object is instance of http_referer_t.
 
http_referer_thttp_referer_dup (su_home_t *home, http_referer_t const *hdr))
 Duplicate (deep copy) http_referer_t.
 
http_referer_thttp_referer_copy (su_home_t *home, http_referer_t const *hdr))
 Copy a http_referer_t header structure.
 
http_referer_thttp_referer_make (su_home_t *home, char const *s))
 Make a header structure http_referer_t.
 
http_referer_thttp_referer_format (su_home_t *home, char const *fmt,...)))
 Make a Referer header from formatting result.
 

Variables

msg_hclass_t http_referer_class []
 Header class for HTTP Referer header.
 
msg_parse_f http_referer_d
 Decode (parse) a Referer header.
 
msg_print_f http_referer_e
 Encode (print) a Referer header.
 

Detailed Description

Macro Definition Documentation

◆ HTTP_REFERER_INIT

#define HTTP_REFERER_INIT ( )

Initializer for structure http_referer_t.

A static http_referer_t structure must be initialized with the HTTP_REFERER_INIT() macro. For instance,

#define HTTP_REFERER_INIT()
Initializer for structure http_referer_t.
Definition http_protos.h:7842
Location, Referer.
Definition http.h:242

◆ HTTPTAG_REFERER

#define HTTPTAG_REFERER (   x)

Tag list item for pointer to a Referer header object.

The HTTPTAG_REFERER() macro is used to include a tag item with a pointer to a http_referer_t object in a tag list.

Parameters
xpointer to a http_referer_t header structure, or NULL.

◆ HTTPTAG_REFERER_STR

#define HTTPTAG_REFERER_STR (   s)

Tag list item for string with Referer header value.

The HTTPTAG_REFERER_STR() macro is used to include a tag item with a string containing value of a http_referer_t header in a tag list.

Parameters
spointer to a string containing http_referer_t value, or NULL.

The HTTPTAG_REFERER_STR string can be converted to a http_referer_t header structure by giving the string s has second argument to function http_referer_make().

Enumeration Type Documentation

◆ anonymous enum

anonymous enum
Enumerator
http_referer_hash 

Hash of Referer header.

Function Documentation

◆ http_is_referer()

int http_is_referer ( http_header_t const *  header)
inline

Test if header object is instance of http_referer_t.

The function http_is_referer() returns true (nonzero) if the header class is an instance of Referer header object and false (zero) otherwise.

Parameters
headerpointer to the header structure to be tested
Returns
The function http_is_xreferer() returns true (nonzero) if the header object is an instance of header referer and false (zero) otherwise.

◆ http_referer_copy()

http_referer_t * http_referer_copy ( su_home_t home,
http_referer_t const *  hdr 
)
inline

Copy a http_referer_t header structure.

The function http_referer_copy() copies a header structure hdr. If the header structure hdr contains a reference (hdr->h_next) to a list of headers, all the headers in that list are copied, too. The function uses given memory home to allocate all the memory areas used to copy the header structure hdr.

Parameters
homememory home used to allocate new structure
hdrpointer to the header structure to be duplicated

When copying, only the header structure and parameter lists attached to it are duplicated. The new header structure retains all the references to the strings within the old header, including the encoding of the old header, if present.

Example
referer = http_referer_copy(home, http->http_referer);
http_referer_t * http_referer_copy(su_home_t *home, http_referer_t const *hdr))
Copy a http_referer_t header structure.
Definition http_protos.h:8036
Returns
The function http_referer_copy() returns a pointer to newly copied header structure, or NULL upon an error.

◆ http_referer_dup()

http_referer_t * http_referer_dup ( su_home_t home,
http_referer_t const *  hdr 
)
inline

Duplicate (deep copy) http_referer_t.

The function http_referer_dup() duplicates a header structure hdr. If the header structure hdr contains a reference (hdr->x_next) to a list of headers, all the headers in the list are duplicated, too.

Parameters
homememory home used to allocate new structure
hdrheader structure to be duplicated

When duplicating, all parameter lists and non-constant strings attached to the header are copied, too. The function uses given memory home to allocate all the memory areas used to copy the header.

Example
referer = http_referer_dup(home, http->http_referer);
http_referer_t * http_referer_dup(su_home_t *home, http_referer_t const *hdr))
Duplicate (deep copy) http_referer_t.
Definition http_protos.h:8029
Returns
The function http_referer_dup() returns a pointer to the newly duplicated http_referer_t header structure, or NULL upon an error.

◆ http_referer_format()

http_referer_t * http_referer_format ( su_home_t home,
char const *  fmt,
  ... 
)
inline

Make a Referer header from formatting result.

The function http_referer_format() makes a new Referer header object using formatting result as its value. The function first prints the arguments according to the format fmt specified. Then it allocates a new header structure, and uses the formatting result as the header value.

Parameters
homememory home used to allocate new header structure.
fmtstring used as a printf()-style format
...argument list for format
Note
This function is usually implemented as a macro calling msg_header_format().
Returns
The function http_referer_format() returns a pointer to newly makes header structure, or NULL upon an error.

◆ http_referer_init()

http_referer_t * http_referer_init ( http_referer_t  x[1])
inline

Initialize a structure http_referer_t.

An http_referer_t structure can be initialized with the http_referer_init() function/macro. For instance,

http_referer_t http_referer;
http_referer_init(&http_referer);
http_referer_t * http_referer_init(http_referer_t x[1])
Initialize a structure http_referer_t.
Definition http_protos.h:7858

◆ http_referer_make()

http_referer_t * http_referer_make ( su_home_t home,
char const *  s 
)
inline

Make a header structure http_referer_t.

The function http_referer_make() makes a new http_referer_t header structure. It allocates a new header structure, and decodes the string s as the value of the structure.

Parameters
homememory home used to allocate new header structure.
sstring to be decoded as value of the new header structure
Note
This function is usually implemented as a macro calling http_header_make().
Returns
The function http_referer_make() returns a pointer to newly maked http_referer_t header structure, or NULL upon an error.

Variable Documentation

◆ http_referer_class

msg_hclass_t http_referer_class[]
extern

Header class for HTTP Referer header.

The header class http_referer_class defines how a HTTP Referer header is parsed and printed. It also contains methods used by HTTP parser and other functions to manipulate the http_referer_t header structure.


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